A secure format?

Back to post

Comments

Robert W wrote on 4/9/2008, 11:05 AM
Good man. I think Cflix is going to do the job. It is in the interests of the client to avoid the material being leaked or bootlegged by a third party. This way I can make it explicit to the client that the material is sensitive and that he has to keep the password in a secure place. If a third party intervenes the file somehow goes walkies, say it somehow makes it's way onto a file sharing site, it will be completely useless without the password because it will be so encrypted. At least it would be until they crack 256bit AES encryption.

Of course my client could finds ways to get the video and audio out and distribute it, but if they do, they will be in breach. And as I say, that is not in their interest.

I will be testing this application to destruction and see if I can contact the author and get him to add a few extra features that would be useful to me and perhaps some of you guys too.

Thank again for this! I've been searching for a solution for months!

Rob,
Former user wrote on 4/9/2008, 11:36 AM
Let us know how it goes. It could become useful for other people who just want to keep their material from being copied easily.

Good luck.

Dave T2
craftech wrote on 4/9/2008, 11:46 AM
This has promise:

This video e-mail will self-destruct in 5 seconds.

John
fldave wrote on 4/9/2008, 11:53 AM
Isn't that what the original DIVX did? LOL!
John_Cline wrote on 4/9/2008, 12:26 PM
"Doesn't this mean there is no copy of the video in any temp folder anywhere on the hard drive?"

Yes, but there is nothing stopping anyone from simply copying the data from the encrypted drive to an unencrypted drive.
busterkeaton wrote on 4/9/2008, 12:34 PM
So are you a detective or something? Or do you have dirt on a political candidate?


By the way speaking of politics, remember to proofread your titles people. John McCain's latest ad reads "PAID FOR BY JOHM MCCAIN."
Robert W wrote on 4/10/2008, 5:28 AM
I started testing with the Cflix trial today, but I am finding it has a few problems with some standard codecs. With some an error message shows it can not find the right decode. Others just give a black screen. With xVid the video goes out of sync with the audio.

Also when you encode a file as an executable, when you try to run it, it brings up a requestor for the password. It masks entry of the password by default, but rather oddly, there is a checkbox to disable masking built into the same box, which seems to defeat the object.

I shall message the author today and see if there are any revisions planned.
Robert W wrote on 5/16/2008, 6:36 AM
Hi guys,

I forgot to come back and report on this software, so now I will.

1) I overcame sync issues with a slightly convoluted procedure. I rendered the video in Vegas 8 to xVID. Then I rendered the audio separately as a wav.

2) I installed the LameACM codec. Vegas 8 does not work with this codec. So I jumped into Virtualdub to combine the streams.

3) I set Virtual dub to Video/Direct Stream Copy and Audio/Full Stream Processing

4) I set Audio/Interleaving/Delay audio track to 125ms (about 3 Pal frames, I think)

5) I set the Audio/Conversion to a custom rate of 32000

6) I set Audio/Compression to LameACM 32000 96kbps CBR. It is very important to set it to CBR, as you will get random sync with ABR or VBR modes. This is a limitation of the Video For Windows architecture.

7) Saved as an AVI and processed in Cryptaflix.

The sync is still not perfect and requires a little tweaking, but I think at least some of this could be down to driver latency. You should find that the sync remains constant with this method.

The author was supportive while I was trying to resolve the issues and I would recommend the software for those who need to deliver secure video for a Windows based environment.

But does anybody know of any software that does something similar for Mac OS X?
alltheseworlds wrote on 5/16/2008, 7:12 PM
Why not just make the video an EXE file and password protect that ?